Problem:
When I try to update my site via Elementor, the "Server Error 500" appear. If I deactivate WPML, everything works.
Solution:
By looking at your debug info, it is possible to see that the WP Memory Limit is set to 40M, while the recommended is 256. Changing it can solve the problem.
Please follow these steps:
Find your wp-config.php file in the root directory of your WordPress installation
Open the wp-config.php file with a text editor, then locate the line that includes: define(‘WP_DEBUG’, false)
Then add after it, the below line of code: define (‘WP_MEMORY_LIMIT’, ‘256M’);
Save the wp-config.php file, then refresh your website